My enterprise AV is telling me each time Fiddler Script Editor starts that it's attempting to access the internet, and it denies those attempts. What are you doing that this program now needs internet access? I request that you give us a way to disable this behavior. I'm using Fiddler Script Editor 2.6.2.0 in Windows 7 x64.
You can use Fiddler to watch the traffic from the telemetry system. :)
POST http://ac9756ec8ef85a0.monitor-eqatec.com/monitor.ashx?pv=4&mt=dotnet&mb=3.3.43&cv=3efb50dd0d53f&av=2.6.2.0&tm=0&lr=0 HTTP/1.1
Content-Type: text/xml
Host: ac9756ec8ef85a0.monitor-eqatec.com
Content-Length: 894
Expect: 100-continue
Connection: Keep-Alive
HTTP/1.1 200 OK
Server: nginx
Date: Thu, 03 Aug 2017 22:03:16 GMT
Content-Type: text/xml
Content-Length: 99
Connection: keep-alive
Cache-Control: no-cache, no-store
Pragma: no-cache
Expires: -1
X-AspNet-Version: 4.0.30319
X-Powered-By: ASP.NET
<Response ver="4" status="success">
<Restriction id="608" Log="1250" LogType="1" />
</Response>
Presumably, it's collecting telemetry on usage, and for crash reporting. If you've configured your firewall to deny access, what's the problem?